/*-------------------------------------------------------------------------
 * norm_test.c
 *        Program to test Unicode normalization functions.
 *
 * Portions Copyright (c) 2017, PostgreSQL Global Development Group
 *
 * IDENTIFICATION
 *      src/common/unicode_norm.c
 *
 *-------------------------------------------------------------------------
 */
#include "postgres_fe.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "common/unicode_norm.h"

#include "norm_test_table.h"

static char *
print_wchar_str(const pg_wchar *s)
{
#define BUF_DIGITS 50
    static char buf[BUF_DIGITS * 2 + 1];
    int            i;

    i = 0;
    while (*s && i < BUF_DIGITS)
    {
        snprintf(&buf[i * 2], 3, "%04X", *s);
        i++;
        s++;
    }
    buf[i * 2] = '\0';
    return buf;
}

static int
pg_wcscmp(const pg_wchar *s1, const pg_wchar *s2)
{
    for (;;)
    {
        if (*s1 < *s2)
            return -1;
        if (*s1 > *s2)
            return 1;
        if (*s1 == 0)
            return 0;
        s1++;
        s2++;
    }
}

int
main(int argc, char **argv)
{
    const        pg_unicode_test *test;

    for (test = UnicodeNormalizationTests; test->input[0] != 0; test++)
    {
        pg_wchar   *result;

        result = unicode_normalize_kc(test->input);

        if (pg_wcscmp(test->output, result) != 0)
        {
            printf("FAILURE (Normalizationdata.txt line %d):\n", test->linenum);
            printf("input:\t%s\n", print_wchar_str(test->input));
            printf("expected:\t%s\n", print_wchar_str(test->output));
            printf("got\t%s\n", print_wchar_str(result));
            printf("\n");
            exit(1);
        }
    }

    printf("All tests successful!\n");
    exit(0);
}
